Name: China Aluminum 50W White SMD LED PCBA Boards Modules Manufacturers, Suppliers - Factory Direct Price - Guangmai Technology
Brand: GMKJ
SKU: 144472083

Guangmai Technology is professional in making the Aluminum 50W White SMD LED PCBA Boards Modules.

Before LED passing the reflow soldering oven, do we need to bake the leds?

After disassembling the sealed bag, put it directly into the oven with the turntable, adjust the temperature to 60-70 degrees, bake for more than 12 hours, and then take out the soldering and reflow soldering.

Before LED lamp beads are produced and applied, why should they be baked in the oven?

If SMD lamp beads are not baked, there will be many dead lights after application. This is because silica gel is used in the packaging process of SMD lamp beads, but silica gel is easy to absorb water. Once heated, the bracket will fall off or the gold wire will break due to thermal expansion and contraction. Therefore, in order to better ensure that the lamp beads can be used normally, generally Bake before use.

Analysis of the main reasons for the throwing of the placement machine.

In the LED SMT production process, how to control the production cost and improve the production efficiency is a matter of great concern to the business owners and engineers, and these have a great relationship with the throwing rate of the placement machine. , Let's talk about the throwing problem of the placement machine.

The so-called throwing means that the placement machine does not paste after sucking the material during production, but throws the material into the throwing box or other places, or performs the above throwing action without sucking the material. Throwing causes material loss, prolongs production time, reduces production efficiency, and raises production costs. In order to optimize production efficiency and reduce costs, it is necessary to solve the problem of high throwing rate.

The main reasons and countermeasures of throwing materials:

Reason 1: The suction nozzle problem, the suction nozzle is deformed, blocked, or damaged, causing insufficient air pressure and air leakage, causing the material to be sucked, incorrectly reclaimed, and the recognition fails and the material is thrown.

Countermeasure: Clean and replace the suction nozzle;

Reason 2: Recognition system problem, poor vision, dirty vision or laser lens, debris interfering with recognition, improper selection of recognition light source and insufficient intensity and grayscale, and the recognition system may be broken.

Countermeasures: clean and wipe the surface of the identification system, keep it clean and free of debris, etc., adjust the intensity and gray level of the light source, and replace the identification system components;

Reason 3: Position problem, the reclaiming material is not in the center of the material, the reclaiming height is not correct (generally press 0.05MM after touching the part), which causes the deviation, the reclaiming is not correct, there is an offset, and the recognition is followed. The data parameters do not match and are discarded as invalid materials by the recognition system.

Countermeasure: adjust the reclaiming position;

Reason 4: Vacuum problem, insufficient air pressure, unsmooth passage of vacuum tube, guide material blocking the vacuum passage, or vacuum leakage caused insufficient air pressure and the material cannot be retrieved, or it falls on the way after picking it up.

Countermeasures: adjust the air pressure steeply to the required air pressure value of the equipment (such as 0.5~~0.6Mpa--YAMAHA placement machine), clean the air pressure pipeline, and repair the leaking air circuit;

Reason 5: Program problem. The component parameters in the edited program are not set correctly, and the parameters such as the actual size and brightness of the material do not match, which will cause the recognition to fail and be discarded.

Countermeasures: modify the component parameters, search for the best parameter settings of the component;

Reason 6: Incoming material problems, irregular incoming materials, unqualified products such as pin oxidation.

Countermeasures: IQC will do a good job inspection of incoming materials and contact the component supplier;

Reason 7: Feeder problem, feeder position deformation, feeder feeding failure (feeder ratchet gear is damaged, the material belt hole is not stuck on the feeder ratchet gear, there are foreign objects under the feeder, spring Aging, or electrical failure), resulting in insufficient or poor reclaiming and throwing of materials, and damage to the feeder.

Countermeasures: adjust the feeder, clean the feeder platform, replace damaged parts or feeders;

When there is a throw-away phenomenon and need to be solved, you can first ask the on-site personnel, through the description, and then directly find the problem based on the observation and analysis, so that the problem can be found and solved more effectively, and the production efficiency is improved at the same time, but the production of the machine is not excessive. time.

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